TY JOUR TI THE TECHNIQUE OF DETERMINATION OF SIZE OF THE FRIGHTENING- DISCHARGE FOR BIRDS OF DIFFERENT TYPES KW the frightening-off category KW sin-antropic birds KW electrophysical method KW computer program JO Bulletin of KSAU AU Ashikhmin, A.A. AU Surinsky, D.O. PY 2017 IS PB Krasnoyarsk State Agrarian University